Slitting and winding machine.



D. M. HUIVHSTON.

SLITTlNG AND WINDING MACHINE.

APPUcATmN FILED sans. 1916. Y 1 mymm Mmmm July 23,1918.

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D.M.HU|VHS10N SLITTING AND WINDING MACHINE.

'APPLICATION FILED SEPLB. 191s.

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SLITTING AND WINDING MACHINE.'

APPLICATION man SEPT. B, 1916 Patented! July 23, 1918.

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DAWSON M. HIVIISTON, 0F AURORA, JELLNOIS.

SII'ITING WINDING MAGHINE.

application filed September 8, .1916.

adapt slitting mechanism especially for slitting abrasive material. Another object is to arrange cutting-off mechanism to coperate with the slitting mechanism. Another object is to provide means for winding the slit material or strips in containers. Another object is to make the winding mechanism interchangeable with the cuttingoif mechanism.

Another object is to generally improve and simplify mechanism of this class.

The objects and advantages of the invention will be further pointed out so far as is necessary in connection with a detailed description of the accompanying drawing, which shows one exemplifying embodiment of the invention.

It is to be understood, however, that the invention is capable of embodiment in other forms, and I do not limit myself to details except as claimed.

Figure l is a side elevation of a machine embodying the invention, the winding mechanism which may be substituted for the cutting-off mechanism being shown in dotted lines.

Fig. 2 is a top plan of the same.

Fig. 3 is a section in a longitudinal vertical plane of the machine through the slitting rolls and cutter.

Fig. l is an enlarged sectional detail of the slitting rolls and guide adjacent thereto.

Fig. 5 is a detail of the winding mechanism in side elevation.

Fig. 6 is a fragmentary detail of the same in rear elevation, parts of the containers being, however, shown in section.

Fig. 7 is an enlarged detail of one of the winding containers, certain adjacent parts being shown in section.

Fig. 8 is a similar detail from an opposite point of view.

Fig. 9 is another enlarged detail of the winding mechanism in side elevation.

Specification of Letters latent.

Patented dulywd, ist@ Serial No. 119,066.

Fig. 10 is another fragmentary detail in rear elevation.

Fig. 1l is an enlarged view, mostly in side elevation, of one of the containers, a part, however, being shown in section.

Fig. 12 is a section of one of the containers in the plane of its axis, the cover being shown in place.

Fig. 13 is a sectional detail ofthe container filled with a wound strip of material produced by the slitting machine, showing means for fastening the strip.

A suitable frame l carries on brackets 2, at the feed end, reels 3, on which the material to be slit, of any, desired width and length, is carried. This machine is especially designed for cutting abrasive material such as emery cloth or sand cloth, or possibly such material as emery paper or sand paper. It will be sufficient to describe the machine as arranged for cutting emery cloth of the kind used by vdentists for treating teeth. It is desired to slit this material into narrow strips, usually a quarter of an inch or less in width, and of various lengths, or to wind the long, narrow strips upon containers, from which they may be conveniently unwound and cut off in any desired lengths by the consumer.

This material 4 from the two feed reels is conducted with its abrasive surfaces 5 together or inward to the slitting rolls 6. These rolls may be of composite construction consisting of alternating disks of different diameter, but however constructed, they provide cutting flanges 7 separated by spaces, and the two rolls are arranged so that the cutting flanges of each lit the spaces between the flanges of the other. Fig. a shows the two webs of material passing together into contact with the slitters and shows that alternate parts of the webs as they are slit are forced more or less into the spaces of the two cutting rolls. rlhe fact that the abrasive surfaces are kept together and inward with the clean surface of the cloth outward, serves to protect the cutting edges of the slitters from wear as much as possible.

There is a tendency for the slit strips to 'stick in -the spaces of the slittingi rolls and to be drawn around by the ,ro s, and to obviate this tendency a guide 8 is provided. This is ,Secured at the ends to side members of the frame and consists of a piece f thin instal, the forward ends of which are slit to correspond with the spaces of the slitting roller. Fingers 9 arethus Yformedandth'ese are bent alternately up and down, so that one finger lies within the spacebetween each two cutting flanges of each roller, and the fforwardif end of each `finger extendsl nearly to the bottom of thisspace. l Consequently,

as the slit strips 4a are drawn away from the y' .slitting rollerscby)` the appropriate feeding mechanism, the lingers 9 pull the strips out ofthegrooyesof the rollers and alternate pairsoflstrips passfabove and below the guide 8, as ,clearly tindicated in4 Fig. 4. .To the rearcf thev guide are feed rolls 10. vAll jthe, strips come `together, at the rear of the guide and are propelled byy rolls 10 to a Ksnitable cutting von mechanism o r winding mechanism. The cutting olf mechanism is shown in position in Fig. 3 and. consistsof "a" weighted .crossm'ember 11, suitably guided for vertical motion in frame members 12. `Thisyveightedmeinber carries aknife 13 cooperating with a stationary knife 14 carried byl a Kframe lmember 15. The transverse Vniliiember l11 is reciprocated vertically by `mechanism later described, andthe speed of ,the reciprocation may bcv aried. The 'lnife 13 chops ed the strips in different desirable lengths as they are fed to the cutting 0H iinechanism, and these strips may fall npon any `suitable receiving table (not shown) s and may be arranged and packedby hand. Winding mechanism which may be substituted. for the cutting ofi mechanismwill be described later.

' Various parts :of the mechanism so far described are driven as follows: A suitable motor 1 6 is carried on a part of the frame "and drives a longitudinal shaft 17 by suitablefbeltor other gearing 18. Agvorm 19 at the -rearl'end of ,shaft 17 drivesa worm gear 2,0c`arried b'yashaft 21. Gear 20 rotates a 'spur gear 22, which may ybe removable, and' lenper,ates lwith a pinion 23 carried by 'any adjustable sector 24. `Pinion 234 meshes with*agelrconnected with the shaft of ,nepo'f theV slitting` rolls 6. and gear. 24a in ti'irirmeshes with another gear 2,5 Icarried by* lthe shaftl ofitli'e other slitting roll. By 1chaaging, gear 2 2; and yriniljusting pinion 23, drivegratio.' of the slitting'rollsrmay be changed. The ,feed rolls 10 may be pro- 'spelled 'bypulleys and a belt 2 6 from one or both, of vthe slitting rolls, asmost clearly Sit-lewin Eig. 3'- A "To, the;` of the slitting rolls; is a,l gear 27 "which carries or is fixed to, Ia'camfdisk having a camgnotch 28. fear27I is'driven by,`afgear 429; mounted on an, adjnstable arm ',30- .lhissser '2.9 dlfrs een?? and. the.. cam" .winding shafts 38.

by engagement with gear 25 of the lower slitting roll, and by changing gear 27 and gear 29, or both, and adjusting the eariying arm 30 of gear 29 the drive ratio of the cam disk may be varied. An arm 31 is fulciuined at 32 on theframe and one end is provided witha cani follower 33 to coperate with camiioteh 2S. The other end of arm 31 engages a roller 34 carried by cross member 11 of the cutting mechanism. Nhen c am notch28 comes opposite cam follower 3K3, the cross bar' 11 diops by gravity and cuts the strips. The slant face of the cam notch then vstrikes the cam follower and moves arm 31 so as to raise the cross bar ll and knife into position for another sti-olie.

Winding mechanism which may be enilployed Ito wind the slit strips in containers.

is indicated in dotted lines in Figs. 1 and 2, and is shown in `suilicient detail in Figs. 5 to 13. This mechanism has side frame members 35 provided with `drilled holes 3U, byA which the winding frame members may be secured to Vthe main frame by suitable Abolts37, as indicated in Fig. 1. The frame members 35y revolubly support, in suitable bearings, a plurality, conveniently three, Each of these shafts hasa slit 39 ruiming from one end to a point 40 near the `other end. rlhe slitted ends of the shafts may be made accessible by hingiiig the adjacent frame piece 35 at 41, as indicated in Fig. 2. But the bearing mountingrofthe'opposite ends of the shafts in the other frame member 35 may be made pei'- manent, if desired. Upon each of the shafts 38, when the hinged frame member 35 is swung out, maybe placed a suitable plurality ofvconltainers 42 (Fig. G). These may be substantially in the form of a shallow box apertured to lit the shaft. At one point in theV periphery of each of the containers is a slot 43. As the containers are placedon the shafts'the slit strips 4a are separated and the end of one strip is threaded lthrough the slot. 43 of one of the containers and then through the slit 39 of the shaft-38. When enough containers are set up and threaded to accommodate all of the strips, the movable frame member 35 is put in position. The containersare then held from turning and at the vsame time suitably spaced on their shafts byl pins 44 carried by cross bars 45 and engaging holes 46 provided in the contaii'iers. More than. two winding shafts are usually provided for the reason that the necessary width of the containers lwould make it inrar/ases the spools increases, and this may be done by yieldable gearing or Weight mechanism, or spring mechanism. The present embodiment shoivs spring mechanism for this pur pose. A spring 47 With Winding and `ratchet mechanisnl 48 of usual Clock type, or other suitable type, is provided, and the drive spring is operatively connected to the Windw ing shaft by step-up gearing 49 of suitable ratio. Usually a double multiplying gear arrangement is desirable, as shown. A part of this multiplying gearing may carry a disk 50 and the disk may be provided vvith a movable stop 5l to engage a frame member 5l and hold the spring mechanism inactive While the parts are being prepared for Winch ing. Everything being ready and the drive motor 16 of the slitting mechanism being started, the stop 5l is removed and the spring mechanism then rotates the Winding shafts 38 and yieldably drives these shafts which vvind up the strips Within the stationary containers until the containers are iilled. The slitting and spring mechanism are then stopped; the containers are removed from the shafts, and in this removal the inner ends of the strips pass out freely through the slits 39 of the shafts. The Winding shafts are then loaded With another set of containers, and so on.

Covers 52 are preferably provided for the containers as shown in Figs. l1 to 13, these having slotted hubs 53 which are adapted to spring into the central apertures of the containers and thus to retain the covers in position. At the same time the slots 54 of the hubs accommodate the inner ends 55 of the strips. The covers 52 may be conveniently recessed at 56 to accommodate the edge of the side Wall, 57 of the containers and the periphery of the cover may preferably continue at some little distance beyond the container as at 58. The covers 52, as shovvn in Figs. 11 and l2 of the drawing, are not used during the Winding operation but are4 only put in position after the containers 42 have been hlled With strips. The outer end 59 of the strip may be brought out through a slot G0 in the peripheral vvall 57 of the container and may be secured by a linger 6l formed as a part of the cover 52 and bent down as shown in Fig. 13 to clamp said end 59 of the strip against the peripheral Wall of the conminer. lvVhen it is desired to unwind a part of the strip from the container the outer end 59 is freed from the clip 6l; the periphery 58 of the cover is grasped in one hand and the strip is then pulled out through the slot G0 to the desired extent and cut 0E. Evidently many different forms of containers and covers may be used but in the best form of the invention the container mechanism will usually embody the described advantages 1n some form or other.

While l have described my invention as adapted for the handling of a certain kind of material, it is evident that some or all of the features of the invention are adaptable to handling other material and I do not limit myself as to the use of the inveu tion except as it may be limited by its own characterd istics.

l claim l. In slitting mechanism, the combination with rolls for holding and feeding a Web, of a slitting couple, consisting of rollers having interlitting cutting flanges and grooves, a guide plate posterior to the slitting rolls having fingers extending into the grooves thereof to free the strips therefrom so that alternate strips pass above and belovv the guide plate. t

2. lin slitting mechanism, the combination of tWo rolls for holding material to be slit, means for associating the Webs of material from each roll and feeding them together, a slitting couple consisting of rollers having interiitting cutting flanges and grooves, and a guide plate posterior to the slitting rolls having fingers extending into the grooves thereof to free the strips therefrom so that alternate pairs of strips pass above and below said guide plate.

3. ln slitting mechanism, the combination of holding reels for tvvo vvebs to be fed together, a slitting couple to cut .the Webs simultaneously into strips, means for carrying the strips away from the slitting couple, and means for cutting the strips into lengths, said last named means including a fixed cutter, a movable Weighted cutter-bar, a lever, a cam, and camdriving means to operate the lever in definite relation to the travel of the strips.

4. In slitting mechanism, the combination of means for feeding and slitting one or more vvebs of fabric, and Winding mechanism comprising a plurality of Winding shafts, a plurality of independent containers removably placed on one or more of said shafts, means for Winding slit strips of fabric Within the containers, and means for holding the containers stationary during Winding While the shafts revolve.

5. In slitting mechanism, the combination of means for feeding and slitting one or more Webs of fabric and Winding mechanism comprising a plurality of Winding shafts, containers removably placed thereon, means for Winding slit strips of fabric Within the containers, and means for holding the eontainers stationary during Winding.

6. In slitting mechanism, the combination of means for feeding and slitting one or more Webs of fabric and Winding mechanism comprising a plurality of Winding shafts, containers removably placed thereon, means for Winding slit strips of fabric Within the conlll@ lilith miners,4 means foixholding the containers the slitting rolls, 51nd Winding mechanism stationaryduiing Winding and means for .comprising shafts, separate containers .ie- 10 yieldably driving the winding shafts. movably placed on` said shafts, means for 7. In slitting mechanism, the combination securing the ends of yslit Strips Within the ofi'eels for holding two rolls ofabrio, two containers -zindwinding the-strips Within the slitting rolls having interitting 4slitting containers, and driving means for the shafts. izmges, means for feeding Webs of fabric from the reels in Contact with each other1 to DAWSON M. HUMISTON.

Copies of this patentmliiay be obtainedfor jive, centseach, .by addressing the Gommissioner of IBatent` `WashingiznounlvDJI. 

